#include <fstream>
using namespace std;

ifstream in("combinari.in");
ofstream out("combinari.out");

int v[19],n,k;

void scrie()
{
	for (int i=1;i<=k;i++)
		out<<v[i]<<" ";
	out<<"\n";
}

void bkt(int p)
{
	if (p==k+1)
	{
		scrie();
		return;
	}
	for (int i=v[p-1]+1;i<=n-k+p;i++)
	{
		v[p]=i;
		bkt(p+1);
	}
}

int main()
{
	in>>n>>k;
	bkt(1);
	return 0;
}